<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<input type="text" placeholder="员工姓名" id="i1">
<input type="text" placeholder="员工工资" id="i2">
<input type="text" placeholder="员工工作" id="i3">
<input type="button" value="添加" onclick="f()">
<table border="1">
  <caption>员工列表</caption>
  <tr>
    <th>姓名</th>
    <th>工资</th>
    <th>工作</th>
  </tr>
</table>
<script>
    let i1 = document.querySelector("#i1");
    let i2 = document.querySelector("#i2");
    let i3 = document.querySelector("#i3");
    let t = document.querySelector("table");
  function f() {
    //创建1个tr  和3个td
      let tr = document.createElement("tr");
      let nameTd = document.createElement("td");
      let salaryTd = document.createElement("td");
      let jobTd = document.createElement("td");
      // 把文本框里面的内容取出设置给td
      nameTd.innerText = i1.value;
      salaryTd.innerText = i2.value;
      jobTd.innerText = i3.value;
      tr.append(nameTd,salaryTd,jobTd); //把td装进tr
    //把tr装进table
      t.append(tr);
  }
</script>
</body>
</html>